A spring-type terminal structure

Abstract

A spring-type terminal structure, comprising a housing (1), a contact bridge (2) and a spring (3), characterized in that: the contact bridge (2) and the spring (3) are assembled together to form a wiring body, the wiring body is mounted in a mounting groove (101) in the housing (1), a tool insertion hole (102) is provided on a side surface of the housing (1) corresponding to the spring (3), and a wire harness insertion hole (103) is provided on a side surface of the housing (1) corresponding to the contact bridge (2). The improved structure of the spring-type terminal adopts a spring-type method for clamping the wiring, ensuring that the wire harness can still be effectively clamped after multiple uses; there is an angle between the wiring tool and the insertion direction of the wire harness, so that the space is not too small during the wiring process, resulting in the tool being unable to enter, making the operation of the circuit breaker terminal terminal smoother.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit breakers, and in particular relates to a spring-type wiring terminal structure. Background Art

[0002] Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. Low-voltage circuit breakers, also known as automatic switches, are electrical appliances that have both the function of manual switches and can automatically provide protection against voltage loss, undervoltage, overload, and short circuits. They can be used to distribute electrical energy, start asynchronous motors infrequently, and protect power lines and motors, and have been widely used.

[0003] Universal circuit breaker products usually have a set of terminals for providing power to the internal controller and outputting various signal states of the universal circuit breaker. The terminals should have the function of reliably connecting and transmitting electrical signals to realize the intercommunication and control functions of the universal circuit breaker installed in the power distribution cabinet. Therefore, the terminals are crucial to the universal circuit breaker.

[0004] Chinese patent ZL201420866054.1 discloses an improved structure of a terminal block for a fixed circuit breaker, which includes a housing, a contact piece is installed in the housing, and the terminal of the contact piece is connected to a wiring spring piece, characterized in that: the plug section of the contact piece is connected to a plug spring piece; the spring piece structure replaces the existing pin structure, and the spring piece is installed at the upper and lower ends of the contact piece to respectively realize external wiring and internal wiring, and the entire structure improves the reliability and stability of the terminal connection. However, the insertion direction of the terminal tool and the wiring harness are the same, which is not conducive to wiring in the switch cabinet. At the same time, the terminal cannot completely position the tool effectively after the tool is inserted, and the tool must be kept in the inserted form during operation, which increases the difficulty of wiring. Summary of the invention

[0005] The purpose of the present invention is to provide a spring-type terminal structure for the above-mentioned existing terminal blocks that are not conducive to wiring during wiring. The spring-type terminal structure adopts a spring method for clamping the wiring to ensure that the wiring harness can still be effectively clamped after multiple uses. There is an angle between the wiring tool and the insertion direction of the wiring harness. During the wiring process, there will be no situation where the space is too small, resulting in the inability of the tool to enter, so that the operation process of the circuit breaker terminal is smoother.

[0006] Technical Solution

[0007] In order to achieve the above technical objectives, the present invention designs a spring-type terminal structure, which includes a shell, a contact bridge and a spring, and is characterized in that: the contact bridge and the spring are assembled together to form a wiring body, the wiring body is installed in a mounting groove in the shell, a tool insertion hole is provided on one side surface of the shell corresponding to the spring, and a wire harness insertion hole is provided on one side surface of the shell corresponding to the contact bridge.

[0008] Furthermore, the harness insertion hole and the tool insertion hole form an angle.

[0009] Furthermore, an included angle between the wire harness insertion hole and the tool insertion hole is 45° to 135°.

[0010] Furthermore, a tool guide boss is provided in the tool insertion hole to guide the tool insertion direction, and a transition fillet is provided at the intersection of the wiring harness insertion hole and the mounting groove.

[0011] Furthermore, the wiring terminal of the contact bridge is provided with a limiting step, and the spring sheet is provided with a wiring harness insertion hole. The wiring terminal of the contact bridge passes through the wiring harness insertion hole, and the limiting step abuts against the spring sheet. The spring sheet is also provided with a bending surface and a limiting surface. A limiting boss is provided in the mounting groove on one side of the inner side surface of the limiting surface, and the bending surface corresponds to the tool insertion hole.

[0012] Beneficial Effects

[0013] The present invention provides a spring-type terminal structure, which adopts a spring method for wiring clamping, thereby ensuring that the wiring harness can still be effectively clamped after multiple uses; there is an angle between the wiring tool and the insertion direction of the wiring harness, and the space is not too small during the wiring process, resulting in the tool being unable to enter, so that the operation process of the circuit breaker terminal is smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 It is a schematic diagram of the installation structure of an embodiment of the present invention.

[0015] Attached Figure 2 Schematic diagram of the wiring body structure in an embodiment of the present invention.

[0016] Attached Figure 3 It is a schematic diagram of a shell product in an embodiment of the present invention.

[0017] Attached Figure 4 Schematic diagram of the shell structure in an embodiment of the present invention.

[0018] Attached Figure 5 Schematic diagram of the contact bridge structure in an embodiment of the present invention.

[0019] Attached Figure 6 Schematic diagram of the spring structure in the embodiment of the present invention. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] Example

[0022] As attached Figure 1 and 2 As shown, a spring-type terminal structure includes a housing 1, a contact bridge 2 and a spring 3, wherein the contact bridge 2 and the spring 3 are assembled together to form a wiring body, and the wiring body is mounted in a mounting groove 101 in the housing 1, and a tool insertion hole 102 is provided on one side of the housing 1 corresponding to the spring 3, and a wire harness insertion hole 103 is provided on one side of the housing 1 corresponding to the contact bridge 2. The wire harness insertion hole 103 forms an angle with the tool insertion hole 102. Specifically, as shown in the attached Figure 3 and 4 As shown, the angle between the harness insertion hole 103 and the tool insertion hole 102 can be between 45° and 135°. A tool guide boss 102a is provided in the tool insertion hole 102 to guide the tool insertion direction, and a transition fillet 103a is provided at the intersection of the harness insertion hole 103 and the mounting groove 101. The cooperation between the transition fillet 103a and the spring 3 can tightly clamp the tool inserted to a certain depth.

[0023] As attached Figure 5 As shown, the connection terminal 201 of the contact bridge 2 is provided with a limiting step 202. Figure 6 As shown, the spring sheet 3 is provided with a harness insertion hole 301, the terminal 201 of the contact bridge 2 passes through the harness insertion hole 301, the limiting step 202 abuts against the spring sheet 3, and the spring sheet 3 is also provided with a bending surface 302 and a limiting surface 303. A limiting boss 101a is provided in the mounting groove 101 on one side of the inner side surface of the limiting surface 303, and the bending surface 302 corresponds to the tool insertion hole 102.

[0024] As attached Figure 2 As shown, in the assembly process of this embodiment, the spring piece 3 and the contact bridge 2 are first assembled, and the wire harness insertion hole 301 is sleeved on the contact bridge 2. Due to the resilience of the spring piece 3, the spring piece 3 and the contact bridge 2 can be well positioned;

[0025] Then the assembled contact bridge 2 and the spring sheet 3 are installed in the housing 1, and the spring sheet 3 and the contact bridge 2 are installed in the mounting groove 101. Since the outer dimensions of the assembled contact bridge 2 and the spring sheet 3 are larger than the mounting groove 101, after the assembly is completed, the contact bridge 2 and the spring sheet 3 can be effectively positioned due to the resilience of the spring sheet 3;

[0026] When the product is plugging in the wiring, the tool 4 (such as a flat-blade screwdriver) is inserted through the tool insertion hole 102. When the tool 4 is inserted, due to the action of the tool guide boss 102a, the tool 4 can only be inserted obliquely upward. Therefore, after the tool 4 passes through the tool guide boss 102a, it can only contact the bending surface 302 of the spring piece 3. The tool 4 continues to be inserted, and the spring piece 3 rotates around the center of the limiting surface 303. The wiring harness insertion hole 301 moves toward the contact bridge 2. When the limiting surface 303 of the spring piece 3 is pushed and the limiting boss 102a is pushed, the spring piece 3 rotates around the center of the limiting surface 303. The wiring harness insertion hole 301 moves toward the contact bridge 2. When the tool 4 contacts the contact bridge 2, the tool 4 is clamped by the bent surface 302 and the arc 1013a due to the resilience of the spring piece 3. At this time, it is not necessary to continue to apply force on the tool 4. At the same time, the wire harness insertion hole 301 is completely on the other side of the contact bridge 2 and aligned with the wire harness insertion hole 103. Since the wire harness insertion hole 103 has a certain slope, the wire harness can be effectively guided to ensure that the wire harness can be effectively inserted into the wire harness insertion hole 301. Then the tool 4 is pulled out of the housing 1, and the spring piece 3 rebounds to clamp the wire harness and the contact bridge 2.

[0027] When the wire harness needs to be unplugged, the tool 4 is inserted into the housing, and the above operation is repeated until the tool is clamped, and then the wire harness can be unplugged.

[0028] The present embodiment provides a spring-type terminal structure, which uses a spring method for wire clamping to ensure that the wire harness can still be effectively clamped after multiple uses; there is an angle between the wiring tool and the insertion direction of the wire harness, and the space will not be too small during the wiring process, resulting in the tool being unable to enter, making the operation process of the circuit breaker terminal terminal smoother.

[0029] The structures, proportions, sizes, etc. illustrated in the accompanying drawings of the present embodiment are only used to match the contents disclosed in the specification so as to be understood and read by those familiar with the technology, and are not used to limit the limiting conditions that the present invention can be implemented, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects that the present invention can produce and the purposes that can be achieved. At the same time, the terms such as "upper", "lower", "left", "right", "middle", "clockwise", "counterclockwise", etc. cited in this specification are only for the convenience of narration, and are not used to limit the scope of the present invention. The change or adjustment of the relative relationship should also be regarded as the scope of the present invention without substantial changes in the technical content.

Claims

1. A spring-type terminal structure, comprising a housing (1), a contact bridge (2) and a spring (3), characterized in that: The contact bridge (2) and the spring sheet (3) are assembled together to form a wiring body, and the wiring body is mounted in a mounting groove (101) in the housing (1); a tool insertion hole (102) is provided on a side surface of the housing (1) corresponding to the spring sheet (3); and a wiring harness insertion hole (103) is provided on a side surface of the housing (1) corresponding to the contact bridge (2); The wiring terminal (201) of the contact bridge (2) is provided with a limiting step (202), the spring sheet (3) is provided with a wire harness insertion hole (301), the wiring terminal (201) of the contact bridge (2) passes through the wire harness insertion hole (301), the limiting step (202) abuts against the spring sheet (3), the spring sheet (3) is further provided with a bending surface (302) and a limiting surface (303), a limiting boss (101a) is provided in the mounting groove (101) on one side of the inner side surface of the limiting surface (303), and the bending surface (302) corresponds to the tool insertion hole (102).

2. A spring-type terminal structure according to claim 1, characterized in that: The harness insertion hole (103) and the tool insertion hole (102) form an included angle.

3. A spring-type terminal structure according to claim 2, characterized in that: The included angle between the harness insertion hole (103) and the tool insertion hole (102) is 45° to 135°.

4. The spring-type terminal structure according to claim 1, characterized in that: A tool guide boss (102a) is provided in the tool insertion hole (102) to guide the tool insertion direction, and a transition fillet (103a) is provided at the junction of the harness insertion hole (103) and the installation groove (101).

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